which statement is true?

Click the Exhibit button.
[edit] [edit]
lab@r1# show protocols lab@r2# show protocols
ospf3 { ospf3 {
area 0.0.0.0 { area 0.0.0.0 {
interface 1o0.0; interface 1o0.0;
interface ge-1/0/6.0; interface ge-1/0/7.0;
}
}
lo0 = 172.16.100.1/32 [edit]
fc00:1000::1/128 lab@r2# show protocols
ospf3 {
area 0.0.0.0 {
interface 1o0.0;
interface ge-1/1/7.0;
interface ge-1/1/6.0;
}
}
You must ensure that r1’s IPv4 loopback address exists in r3’s inet 0 routing table.
Referring to the exhibit, which statement is true?

A.
An IPv4 unicast realm can be enabled on each router.

B.
A policy can be configured on r1 to redistribute 172.16.100.1/32 into OSPFv2, which would cause r3 toeventually learn the route and place it into inet 0.

C.
A RIB group can be configured on r3 to copy that route into inet 0 because 172.16.100.1/32 exists in r3’s
inet6.0 table.

D.
A policy can be configured on r1 to redistribute 172.16.100.1/32 into OSPFv3, which would cause r3 to
eventually learn the route and place it into inet 0.

Explanation:
A RIB group is a way to have a routing protocol, in most cases, place information in multiple route tables.
Each RIB group is named and told where to place and retrieve route information. An example of a RIB group is:
routing-options {
rib-groups {
test {
import-rib [ inet.0 test.inet.0 ];
}
}
https://kb.juniper.net/InfoCenter/index?page=content&id=kb16133&actp=search